For over a month, I’ve been wearing the Google Fitbit Air 24/7. I was convinced my Fitbit Air unit had a defective battery cell or that a glitchy software bug was draining the tank. With a handful of setting tweaks on my Fitbit Air, I ironed out these battery woes and improved its running time. Fitbit Air has given me battery anxietyGoogle needs to fix this immediatelyCloseBattery endurance was a primary reason I picked up the Google Fitbit Air. Google claims it lasts up to seven days, which sounds fantastic on paper compared to what you get from a Google Pixel Watch or Samsung Galaxy Watch.